# Adding Client Tags to Mobile SDK Integrations

The Engine Mobile SDK supports adding your unique Client Tags to track performance of specific campaigns or users. All Client Tag data is attributed to the lead level.

Client Tags can be added by including a `clientTags` attribute at the top level of the request body, where the value is an array of strings. We strongly recommend only including one element per array for ease of reporting/attribution - if you want two separate tags, include the second tag under a different key. There is no limit to the number of keys in the clientTags object. 

### Example

Here is a sample code snippet of how you might implement the Mobile SDK into your app, with sample `clientTags` appended:

```jsx
<EngineSdk
    bearer="{your_token}"
    primaryColor=”#11aa34”
    secondaryColor=”#444444”
    prefilledData={ any data you don't want to ask for again }
    "clientTags": {
        "clientId": ["client1"],
        "trafficsource": ["email"],
        "campaignId": ["campaign1"]
    }
    { ...optional Event Handlers, please see Event Handler section }
/>
```

See our [GET Lead Client Tags](https://engine.tech/docs/api-reference/#get-lead-client-tags) endpoint for information on attributing lead analytics to your own client tags, if you decide to hit our Analytics API for reporting.

### Supported Client Tag Keys

If you plan for the Engine team to set up reporting (i.e. you do not plan to hit our Analytics API), these are the only keys that are currently fully supported. If a different key is needed, please reach out to your partner manager - we *may* be able to accommodate, but adding nonstandard keys will increase the time it takes Engine to report Client Tag values back to you, and is therefore not recommended.

* agentId
* campaignId
* clientId
* deviceid
* medium
* sourceId
* subid
* subid1
* subid2
* subid3
* target
* trafficsource
* userid


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